Influence of iron precursor hydration state on performance of non-precious metal fuel cell catalysts
Artikel i vetenskaplig tidskrift, 2018

Iron ion-chelating ordered mesoporous carbon (Fe-OMC) catalysts are a class of non-precious metal catalysts for the oxygen reduction reaction in fuel cells. Here, the performance of Fe-OMC catalysts is studied in relation to variations in conditions employed during their synthesis. Specifically, we studied the effects of (i) the hydration state of the iron salt precursor, (ii) the aging time after mixing of the precursor solution and (iii) the relative amount of iron to N/C-precursor used during synthesis. The formation of complexes between the iron ion and the N/C-precursor was investigated by NMR spectroscopy and it was shown that a complex is formed with the amine group of the N/C-precursor being closest to the iron ion. All three parameters studied (i, ii, and iii) were found to have a significant impact on the complex formation between the iron ion and the N/C-precursor as well as on the performance of the resulting catalyst materials.

Författare

Caroline Janson

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Johanna Dombrovskis

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Teknisk ytkemi

Anders Palmqvist

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Journal of Materials Chemistry A

2050-7488 (ISSN)

Vol. 6 7 3116-3125

Ämneskategorier

Oorganisk kemi

Materialkemi

Organisk kemi

DOI

10.1039/c7ta04134a

Mer information

Senast uppdaterat

2018-03-29